Run results for: For Each Vs Map Example Medium

Run details:

User agent: Mozilla/5.0 (Android 5.1; Mobile; rv:61.0) Gecko/61.0 Firefox/61.0

Browser: Firefox Mobile 61

Operating system: Android 5.1

Device Platform: Mobile

Date tested: 6 years ago

Test name	Executions per second
.map	2449928.0 Ops/sec
.forEach	2391623.0 Ops/sec

Script Preparation code:

// Create sample data
var array = [];
array.forEach( i => array.push(i) );

var manipulateFn = num => {
	return num * 2 * 3;
}

Tests:

.map
var newArray = array.map( i => manipulateFn(i));
.forEach
var newArray = []; array.forEach( i => { newArray.push(manipulateFn(i)); });